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Finding the Fourth Proportional to 2,998.62, 4,496.31 and 2,178.90

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Solution

The fourth proportional to 2,998.62, 4,496.31 and 2,178.90 is: 3,267.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.62 : 4,496.31 = 2,178.90 : x
  2. Step 2: Convert to fraction form
    2,998.62/4,496.31 = 2,178.90/x
  3. Step 3: Cross multiply
    2,998.62x = 4,496.31 × 2,178.90
  4. Step 4: Simplify right side
    2,998.62x = 9,797,009.86
  5. Step 5: Solve for x
    x = 9,797,009.86/2,998.62
  6. Step 6: Final answer
    x = 3,267.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.